DVD+RW won't play

[iluvJLO]

I got a Verbatim "DataLifePlus" DVD+RW that will not be recognized by my Toshiba SD-C2402 DVD-Rom drive. I tried it on my other generic DVD-Rom drive on another computer, and that drive won't recognize the disc either. It only works on my dvd player. I have a few DVD-R's that work on both my computers. Does this mean that my dvd drives will not play any DVD+RW? Because I plan on buying a dual burner, but I can't find any DVD-R media in bulk for cheap. It seems like DVD+RW is more readily available and cheaper. Help!

[wulf109]

http://www.allmediaoutlet.com/allmedia/index.jsp

Some DVD-ROM's and some standalones donot recognize +RW.
I have Artec DVD-ROM that won't even recognize a CD-RW.